Today’s video round-up looks at defending the earth from asteroids and what some would call the best DVD commentary ever. There’s also some other interesting stuff.

View more daily video round-ups here.

Defending the Earth from asteroids:

Galaxy S2 ad makes fun of Apple fans:

Arnold’s Total Recall commentary:

The primitives of the HTML5 Foundation:

A portable stove:

Welcome to the Jungle on cellos:

Badass Grandma plays Call of Duty:

“What Facebook Knows About You”: